Its not based on nothing. Its based on reports from multiple mastodon admins and assumed since the lemmy.world/mastodon.world admin is a huge server admin and is yet to deny signing any NDA like others have.

Its clearly not evidence but I’ll take his silence as a warrant canary not being updated until he states he hasn’t signed an NDA.

They signed an NDA so they probably can’t talk about it. Which sucks. (This is known because the larger mastodon servers were approached and the lemmy.world admin runs mastodon.world which is one of the biggest mastodon servers)

There’s been reports of people being in the ML/Ai industry asked to sign NDA’s by facebook and then essentially told to sit around and do nothing to essentially hold their competition captive.